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151.
The objective of this study was to investigate graduate students' perceptions of their graduate advisors' communication (competence, credibility, and nonverbal immediacy), and how these perceptions impact advisees' perceptions of learning, effectiveness of the advisee‐advisor relationship, and advisors' degrees of mentoring. Advisee perceptions of her or his advisor's competence and caring/goodwill accounted for 43% of the variance in advisee cognitive learning. Advisee perceptions of her or his advisor's caring/ goodwill accounted for 39% of the variance in advisee perceptions of the effectiveness of the advisee‐advisor relationship. Lastly, this study noted that the linear combination of advisee perceptions of advisor credibility and communication competence accounted for 55% of the variance in an advisee's perception of the amount of mentoring an advisee received from her or his graduate advisor.  相似文献   
152.
This paper reports the development of the Perceived Supervisor Machiavellian Measure (PSMM) for use in the organizational communication context. Data were drawn from full-time employees who were part-time graduate students in a corporate and organizational communication program. Employees' perceptions of supervisor Machiavellianism were negatively related to employees' perceptions of supervisor credibility (competence, caring, and trustworthiness), employees' attitudes toward the supervisor, employee motivation, and employee job satisfaction. Supervisors' perceived communication behaviors (nonverbal immediacy, responsiveness, and assertiveness) accounted for a significant amount of variance in perceived supervisor Machiavellianism. The results support a general model of supervisor behavior and provide a foundation for future research in organizational communication.  相似文献   
153.
This study describes the status of small school reforms in U.S. high schools and contemplates their future. It asks how cultural and instructional reforms differ across school reform types. Analyses focus on indicators of teacher and student culture as well as instructional reforms including project-based learning (PBL) and other inquiry-related practices. Findings are based on data from a national survey completed by 395 high school teachers who were responsible for and had used PBL in core academic subjects. Study participants taught in large, comprehensive high schools; in schools that had converted to small learning communities; and in newly created small school start-ups. Some of these small schools and conversions were based on a reform model, and others were not. Teachers in reform model schools reported the greatest number of cultural and instructional reforms, followed by teachers in other small schools. Reform models were particularly strong on instructional reforms and student culture. In general, start-up teachers reported more success implementing reforms than teachers in conversion schools, and teacher culture was reformed much more often than student culture and instruction. These findings help shed light on how widely practices and conditions have spread throughout the broader small schools movement, and which of these (including extensive PBL use) only seem to flourish in schools that subscribe to a holistic reform model.  相似文献   
154.
Academic dishonesty among high school students has long since transformed into an epidemic that affects nearly every student, compromising not only their intellectual growth but also their moral development. Yet, beyond the occasional hand-wringing in the media, the problem has been largely ignored by teachers, schools, policymakers, and even character educators. To address this notable failure to respond, the authors developed and evaluated a character education program that sought to use the epidemic of academic dishonesty as an opportunity to reduce cheating and promote integrity. The present article describes the core components and central mechanisms of this schoolwide program as well as results from a 3-year mixed methods study of its implementation at 3 high schools in the Northeastern United States. These results and their implications are discussed in detail. The article also outlines suggestions for further program development and research.  相似文献   
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In a previous article, we provided a review of the literature pertaining to the potential misdilagnosis of giftedness as ADHD, as well as a small‐scale study to illustrate this potential misdiagnosis. In this issue of Roeper Review, Mika provides several criticisms of that paper. In this article, we provide responses to her arguments by discussing the “symptoms” of giftedness; the relationship between ADHD, giftedness, and overexcitabilities; and the diagnosis of ADHD.  相似文献   
158.
The current research examined whether instructional activities centering on contrasting cases promoted secondary school students’ evaluations of source features present in a multiple-documents inquiry context. Two hypothetical students’ document evaluation strategy protocols were designed: One featured more sophisticated strategies commonly enacted by experts and better college students and a second featured less sophisticated strategies commonly enacted by secondary school students. A series of classroom-based activities required that students compare/contrast the two protocols to decide which were the best strategies when analyzing multiple scientific documents and why. The findings demonstrated that students who previously participated in the intervention activities included more scientific concepts from more useful documents when generating essay responses from memory, displayed better rankings of the usefulness of the set of multiple documents, and offered more principled justifications based on source feature evaluations of trustworthiness compared to students who instead received typical classroom instruction. We discuss the instructional implications of a contrasting-cases approach in facilitating secondary school students’ usage of source features within multiple-documents inquiry contexts.  相似文献   
159.
Many Web sites have begun allowing users to submit items to a collection and tag them with keywords. The folksonomies built from these tags are an interesting topic that has seen little empirical research. This study compared the search information retrieval (IR) performance of folksonomies from social bookmarking Web sites against search engines and subject directories. Thirty-four participants created 103 queries for various information needs. Results from each IR system were collected and participants judged relevance. Folksonomy search results overlapped with those from the other systems, and documents found by both search engines and folksonomies were significantly more likely to be judged relevant than those returned by any single IR system type. The search engines in the study had the highest precision and recall, but the folksonomies fared surprisingly well. Del.icio.us was statistically indistinguishable from the directories in many cases. Overall the directories were more precise than the folksonomies but they had similar recall scores. Better query handling may enhance folksonomy IR performance further. The folksonomies studied were promising, and may be able to improve Web search performance.  相似文献   
160.
An evolutionary programming-based adaptive observer is presented in this paper to improve the performance of state estimation of nonlinear time-varying sampled-data systems. Also, this paper presents a novel state-space adaptive tracker together with the proposed observer and estimation schemes for nonlinear time-varying sampled-data systems having actuator failures. For the class of slowly varying nonlinear time-varying systems, the proposed methodology is able to achieve the desired fault detection and performance recovery for the originally well-designed systems, as long as the controller having the high-gain property. For practical implementation, we utilize the advantages of digital redesign methodology to convert a well-designed high-gain analog controller/observer into its corresponding low-gain digital controller/observer. Illustrative examples are given to demonstrate the effectiveness of the proposed method. The developed digitally redesigned adaptive tracker with the proposed observer and estimator is suitable for implementation by using microprocessors.  相似文献   
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